Wells – Processes – In situ combustion
Patent
1978-01-23
1979-11-20
Novosad, Stephen J.
Wells
Processes
In situ combustion
166259, 166267, 166302, 208187, 210187, 299 2, E21B 4324, E21C 4110, B01D 1704
Patent
active
041747518
ABSTRACT:
A technique is described for breaking the very strong emulsion of shale oil and water produced by an in situ oil shale retorting process so that separate shale oil and water phases can be recovered. The emulsion is broken by maintaining a volume of such emulsion at a bulk temperature of at least about 120.degree. F., and momentarily heating portions of emulsion to a temperature substantially higher than the bulk temperature of the emulsion. Preferably the emulsion of shale oil and water is held at a bulk temperature in the range of from about 120.degree. to 190.degree. F. in contact with heating means maintained in the range of from about 170.degree. F. to about 240.degree. F. Momentary localized heating of emulsion to a temperature substantially higher than the bulk temperature of the emulsion accelerates the breaking of the emulsion.
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Uren, L. C., Petroleum Production Engineering--Oil Field Exploitation, Third Edition, 1953, pp. 573-575.
Novosad Stephen J.
Occidental Oil Shale Inc.
Suchfield George A.
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